Admin Ajax Issue with next Button

I created a multi step CF7 form and it worked great. I updated PHP to 7.4 and then it seemed that I get an ajax error where i cant go past step 1. I am not sure the issue is tied to the PHP version though because I downgraded PHP to 7.3 and the issue is still there.

(if there is an authorization popup use admin/dev1)

Here is the latest info in my error log

[Wed Mar 09 07:48:11.347323 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: PHP Deprecated:  Function wpcf7_add_shortcode is <strong>deprecated</strong> since Contact Form 7 version 4.6! Use wpcf7_add_form_tag instead. in /home/rsdev3/asp.dev2-redsequoia.com/wp-content/plugins/contact-form-7/includes/functions.php on line 540, referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347366 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: PHP Fatal error:  Uncaught Error: Call to a member function get_posted_data() on null in /home/rsdev3/asp.dev2-redsequoia.com/wp-content/plugins/contact-form-7-multi-step-module/cf7msm.php:518, referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347373 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: Stack trace:, referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347382 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #0 /home/rsdev3/asp.dev2-redsequoia.com/wp-includes/class-wp-hook.php(307): cf7msm_set_step(Object(WPCF7_Validation), Array), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347388 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #1 /home/rsdev3/asp.dev2-redsequoia.com/wp-includes/plugin.php(189): WP_Hook->apply_filters(Object(WPCF7_Validation), Array), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347393 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #2 /home/rsdev3/asp.dev2-redsequoia.com/wp-content/plugins/cf7-multi-step/inc/frontend/validation.php(41): apply_filters('wpcf7_validate', Object(WPCF7_Validation), Array), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347399 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #3 /home/rsdev3/asp.dev2-redsequoia.com/wp-includes/class-wp-hook.php(307): NjtCF7MLSValidation->cf7mls_validation_callback(''), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347404 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #4 /home/rsdev3/asp.dev2-redsequoia.com/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347409 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #5 /home/rsdev3/asp.dev2-redsequoia.com/wp-includes/plugin.php(474): WP_Hook->do_action(Array), referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/
[Wed Mar 09 07:48:11.347413 2022] [fcgid:warn] [pid 31052:tid 139661372741376] [client 70.113.34.229:62385] mod_fcgid: stderr: #6 /home/rsdev3/asp.dev2-redsequoia.com/wp-admin/admin-ajax.php(187): do_action(' in /home/rsdev3/asp.dev2-redsequoia.com/wp-content/plugins/contact-form-7-multi-step-module/cf7msm.php on line 518, referer: https://asp.dev2-redsequoia.com/acne-academy-quiz/

The page I need help with: [log in to see the link]